CN105895372A - Multilayer capacitor - Google Patents
Multilayer capacitor Download PDFInfo
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- CN105895372A CN105895372A CN201610082977.1A CN201610082977A CN105895372A CN 105895372 A CN105895372 A CN 105895372A CN 201610082977 A CN201610082977 A CN 201610082977A CN 105895372 A CN105895372 A CN 105895372A
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- 239000003990 capacitor Substances 0.000 title claims description 98
- 239000004020 conductor Substances 0.000 claims description 48
- 239000011248 coating agent Substances 0.000 claims description 33
- 238000000576 coating method Methods 0.000 claims description 33
- 238000005245 sintering Methods 0.000 claims description 29
- 238000007747 plating Methods 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 48
- 238000009826 distribution Methods 0.000 description 16
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 239000006210 lotion Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910010252 TiO3 Inorganic materials 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
- H01G4/2325—Terminals electrically connecting two or more layers of a stacked or rolled capacitor characterised by the material of the terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/236—Terminals leading through the housing, i.e. lead-through
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Ceramic Capacitors (AREA)
Abstract
A length in a first direction of an element body is smaller than a length in a second direction of the element body and smaller than a length in a third direction of the element body, the second direction being perpendicular to the first direction, the third direction being perpendicular to the first and second direction. A difference between a maximum thickness and a minimum thickness of a first electrode portion is smaller than a difference between a maximum thickness and a minimum thickness of a second electrode portion. A difference between a maximum thickness and a minimum thickness of a third electrode portion is smaller than a difference between a maximum thickness and a minimum thickness of a fourth electrode portion. The maximum thickness of the first electrode portion and the maximum thickness of the third electrode portion are larger than thicknesses of respective outer layer portions.
Description
Technical field
The present invention relates to cascade capacitor.
Background technology
As the cascade capacitor being built in electronic component-embedded board, it is known to Japanese Unexamined Patent Publication
Cascade capacitor described in 2010-129737 publication.This cascade capacitor possesses: present length
The ferritic of cube shape, multiple first internal electrode, multiple second internal electrode, the first terminal
Electrode, the second terminal electrode.First and second internal electrodes multiple in the way of the most relative,
Alternately it is configured in ferritic.The first terminal electrode is configured in ferritic, and with multiple first in
Portion's electrode connects.Second terminal electrode is configured in ferritic, and with multiple second internal electrodes even
Connect.
In the manufacture process of electronic component-embedded board, cascade capacitor is being built in substrate
After, substrate is formed and arrives the first terminal electrode and the via hole of the second terminal electrode.Path
Hole is formed by Laser Processing.In this case, to the first terminal electrode and the second terminal electricity
Laser is irradiated in pole, and the first terminal electrode and the second terminal electrode may sustain damage.
Summary of the invention
One mode of the present invention provides a kind of cascade capacitor, and it can realize slimming, with
Time can suppress the impact of damage of first and second terminal electrode caused by irradiation of laser.
The cascade capacitor involved by one mode of the present invention, possesses: present rectangular shape
Ferritic, multiple first internal electrode, multiple second internal electrode, the first terminal electrode,
Two-terminal electrode.Ferritic has: the most mutually relative to a pair interarea, with
In the second direction that one direction is orthogonal mutually relative to a pair first sides, with first and second
On the third direction that direction is orthogonal mutually relative to a pair second sides.Multiple first internal electrodes
With multiple second internal electrodes in the way of the most relative, alternately it is configured at
In ferritic.The first terminal electrode is configured at ferritic, and is connected with multiple first internal electrodes.The
Two-terminal electrode is configured at ferritic, and is connected with multiple second internal electrodes.Ferritic has multiple
Internal layer portion that first internal electrode and multiple second internal electrode are positioned at and with in a first direction
The pair of outer layer portion that the mode in clamping internal layer portion positions.The length of the first direction of ferritic compares ferritic
The length of second direction little and less than the length of the third direction of ferritic.The first terminal electrode
There is the first electrode part being configured at interarea and the second electrode portion being configured at first side
Point.Second electrode part is connected with multiple first internal electrodes.Second terminal electrode has configuration
The 3rd electrode part and the 4th electrode part being configured at another the first side in interarea.The
Three electrode parts are separated with the first electrode part on interarea in a second direction.4th electrode portion
Divide and be connected with multiple second internal electrodes.The maximum gauge of the first electrode part and minimum thickness
Difference is less than the difference of the maximum gauge of the second electrode part and minimum thickness.3rd electrode part is
The maximum gauge of difference ratio the 4th electrode part of big thickness and minimum thickness and the difference of minimum thickness
Little.The maximum gauge of the first electrode part and the maximum gauge of the 3rd electrode part are than each outer layer portion
Thickness big.
In cascade capacitor involved by said one mode, the length ratio of the first direction of ferritic
The length of the second direction of ferritic is little, and less than the length of the third direction of ferritic.Therefore, may be used
Realize the slimming of cascade capacitor, it is possible to achieve be suitable to be built in the cascade capacitor of substrate.
The first terminal electrode has the first electrode part of the interarea being configured at ferritic, the second terminal electrode
There is the 3rd electrode part of the interarea being configured at ferritic.Stacking involved by said one mode
Capacitor can be connected with the wired electric being formed at substrate in the interarea side of ferritic.Therefore, above-mentioned
Cascade capacitor involved by one mode can easily be built in substrate.
The maximum gauge of the first electrode part and the maximum gauge of the 3rd electrode part can also ratio respectively
The thickness in outer layer portion is big.Therefore, with maximum gauge and the 3rd electrode of the such as first electrode part
Cascade capacitor below the thickness that maximum gauge is each outer layer portion of part is compared, said one
In cascade capacitor involved by mode, first and the 3rd electrode part thicker.Therefore, even if
To first and the 3rd in the case of electrode partial illumination laser, it is also possible to suppress laser lower
The impact of the damage caused by irradiation.
The maximum gauge of the first electrode part and the maximum of the difference ratio second electrode part of minimum thickness
The difference of thickness and minimum thickness is little, and therefore, the flatness of the first electrode part is than the second electrode portion
The flatness divided is high.The maximum gauge of the 3rd electrode part and difference ratio the 4th electrode of minimum thickness
The maximum gauge of part and the difference of minimum thickness are little, therefore, and the flatness ratio of the 3rd electrode part
The flatness of the 4th electrode part is high.These structures can improve the distribution and first being formed at substrate
And second connection reliability of terminal electrode.
The first terminal electrode and the second terminal electrode can also have the sintering conductor being formed at ferritic
Layer.In this case, the sintering maximum gauge of conductor layer of the first electrode part and minimum thickness
Difference less than the difference of the sintering maximum gauge of conductor layer of the second electrode part and minimum thickness.The
The maximum gauge of the sintering conductor layer of three electrode parts and difference ratio the 4th electrode part of minimum thickness
The sintering maximum gauge of conductor layer and the difference of minimum thickness little.For these structures, even if
In the case of the first terminal electrode and the second terminal electrode have sintering conductor layer, it is possible to simple
To realize the flatness of the first electrode part higher than the flatness of the second electrode part, and the 3rd electricity
The structure that the flatness of pole part is higher than the flatness of the 4th electrode part.
The length of the first direction of ferritic can also be than the length of the second direction of the first electrode part
Little and less than the length of the second direction of the 3rd electrode part.In such a case it is possible to realize
The further slimming of cascade capacitor.In the cascade capacitor of this example, with the such as first electricity
The length of the length of the second direction of pole part and the second direction of the 3rd electrode part is than ferritic
The cascade capacitor that the length of first direction is little is compared, first and the 3rd electrode part area relatively
Greatly, bigger with the electrode area that the distribution being formed at substrate is connected.Therefore, it can easily enter
Row is formed at the distribution of substrate and the connection of first and second terminal electrode.
The length of the first direction of ferritic can also be than the first electrode part in second direction and
The interval of three electrode parts is little.Even if in this case, it is also possible to realize entering of cascade capacitor
One step slimming.
The first electrode part and the interval of the 3rd electrode part in second direction can also be first
Below the length of the second direction of electrode part, and it is the length of the second direction of the 3rd electrode part
Below degree.In the cascade capacitor of this example, such as with the first electrode part in second direction
And the 3rd the interval of electrode part bigger than the length of the second direction of the first electrode part, and than the
The cascade capacitor that the length of the second direction of three electrode parts is big is compared, first and the 3rd electrode
The area of part is relatively big, bigger with the electrode area that the distribution being formed at substrate is connected.Therefore,
Can easily carry out the connection of distribution and first and second terminal electrode being formed at substrate.
The first terminal electrode and the second terminal electrode can also be respectively provided with the sintering being formed at ferritic
Conductor layer, the second coating being formed at the first coating sintering conductor layer, being formed at the first coating.
In this case, sintering conductor layer contains Cu or Ni.First coating contains Ni or Sn.Second
Coating contains Cu or Au.In the cascade capacitor of this example, the first internal electrode and the first end
The sintering conductor layer of sub-electrode connects, and therefore, the first internal electrode and the first terminal electrode are reliable
Ground contact.The sintering conductor layer of the second internal electrode and the second terminal electrode connects, therefore, the
Two internal electrodes and the second terminal electrode reliably contact.Second coating contains Cu or Au, because of
This, it can be ensured that it is formed at the distribution of substrate and the connectivity of first and second terminal electrode.The
One coating is during forming the second coating, and suppression sintering conductor layer sustains damage, therefore,
Can deteriorate with the insulaion resistance of inhibition layer stack capacitor.
In first electrode part and the 3rd electrode part, the maximum gauge of sintering conductor layer can also
Bigger than the thickness of the first coating, and be below the thickness of the second coating.The multilayer capacitor of this example
In device, the such as thickness with the first coating is the stacking electricity of more than the maximum gauge of sintering conductor layer
Container is compared, and the first coating is relatively thin.Therefore, it can reduce and form first on sintering conductor layer
The stress produced during coating.In the cascade capacitor of this example, such as with the thickness of the second coating
The cascade capacitor less than the maximum gauge of sintering conductor layer is compared, and the second coating is thicker.Therefore,
The impact of the damage caused by irradiation of laser can be suppressed lower.
The thickness in each outer layer portion can also be less than the thickness of the second coating.In such a case it is possible to
Realize the more slimming of cascade capacitor, suppress the damage caused by irradiation of laser simultaneously lower
The impact of wound.
Second coating for plating Cu layer, and can also be made up of Cu in the surface formation plating Cu layer
Projection.After cascade capacitor is configured at the incorporating section of substrate, to incorporating section potting resin, by
This, be built in substrate.When second coating forms projection, by projection, at the second coating
Surface on formed concavo-convex.Second coating is formed in the structure of projection, and do not form projection
Structure compare, the surface area of the second coating is relatively big, and by above-mentioned concavo-convex second coating and tree
The occlusion of fat is good.Therefore, when cascade capacitor is built in substrate, second can be improved
Coating and the close property of resin.
In order to the mode of the present invention is more fully understood, carry out specifically based on the accompanying drawing be given
Bright, but the present invention is not limited to this.
According to the detailed narration be given, the range of application of the present invention will become more apparent.But,
It will be appreciated that the object lesson described in detail, although instruction the preferred embodiment of the present invention,
Be given by way of illustration, but due to the various changes in the range of the claim of the present invention
Will be apparent from correction, to those skilled in the art, it is of course possible to carry out various change
More.
Accompanying drawing explanation
Fig. 1 is the stereogram representing the cascade capacitor involved by an embodiment.
Fig. 2 is the plane representing the cascade capacitor involved by present embodiment.
Fig. 3 is the side view representing the cascade capacitor involved by present embodiment.
Fig. 4 is the figure for the cross section structure along the IV-IV line in Fig. 2 is described.
Fig. 5 is the figure for the cross section structure along the V-V line in Fig. 2 is described.
Fig. 6 is the figure for the cross section structure along the line VI--VI in Fig. 2 is described.
Fig. 7 A is the plane representing the first internal electrode, and Fig. 7 B is to represent the second internal electrode
Plane.
Fig. 8 is the stereogram representing the cascade capacitor involved by modified embodiment of the present embodiment.
Fig. 9 is the stereogram representing the 3rd electrode layer.
Figure 10 is the figure of the cross section structure for the first terminal electrode is described.
Figure 11 is the figure of the cross section structure for the second terminal electrode is described.
Figure 12 is the mounting structure for the cascade capacitor involved by present embodiment is described
Figure.
Figure 13 is the stereogram representing the cascade capacitor involved by modified embodiment of the present embodiment.
Figure 14 is the cross section for the cascade capacitor involved by modified embodiment of the present embodiment is described
The figure of structure.
Figure 15 is the cross section for the cascade capacitor involved by modified embodiment of the present embodiment is described
The figure of structure.
Figure 16 is the cross section for the cascade capacitor involved by modified embodiment of the present embodiment is described
The figure of structure.
Detailed description of the invention
Hereinafter, referring to the drawings, embodiments of the present invention are described in detail.Additionally,
In explanation, to same key element or have same function key element use same symbol, and omit weight
Multiple explanation.
With reference to Fig. 1～Fig. 6, the structure of cascade capacitor C1 involved by present embodiment is described.
Fig. 1 is the stereogram representing the cascade capacitor involved by present embodiment.Fig. 2 is to represent this
The plane of the cascade capacitor involved by embodiment.Fig. 3 is to represent involved by present embodiment
And the side view of cascade capacitor.Fig. 4 is for explanation cutting along the IV-IV line in Fig. 2
The figure of face structure.Fig. 5 is the figure for the cross section structure along the V-V line in Fig. 2 is described.
Fig. 6 is the figure for the cross section structure along the line VI--VI in Fig. 2 is described.
As shown in Fig. 1～Fig. 6, cascade capacitor C1 possess present rectangular shape ferritic 2,
It is configured at the first terminal electrode 5 and second terminal electrode 7 of the outer surface of ferritic 2.The first terminal
Electrode 5 and the second terminal electrode 7 are separately.Rectangular shape comprises and is carried out in corner and ridge line section
The shape of the cuboid of chamfering and the shape of cuboid that corner and ridge line section are rounded.
Ferritic 2 have as its outer surface, mutually relative to a pair master of generally rectangular shape
Face 2a, 2b, mutually relative to a pair first sides 2c, 2d with mutually relative to a pair second sides
Face 2e, 2f.The direction that a pair interarea 2a, 2b are relative is first direction D1, a pair first sides
The direction that face 2c, 2d are relative is second direction D2, the side that a pair second sides 2e, 2f are relative
To for third direction D3.In present embodiment, first direction D1 is the short transverse of ferritic 2.
Second direction D2 is the width of ferritic 2, orthogonal with first direction D1.Third direction
D3 is the length direction of ferritic 2, orthogonal with first direction D1 and second direction D2.
The length of the first direction D1 of ferritic 2 length than the third direction D3 of ferritic 2 is little,
And it is less than the length of second direction D2 of ferritic 2.The length ratio of second direction D2 of ferritic 2
The length of the third direction D3 of ferritic 2 is big.The length of the third direction D3 of ferritic 2 is for example,
0.2～0.8mm.The length of second direction D2 of ferritic 2 for example, 0.4～1.6mm.Ferritic 2
The length for example, 0.1～0.35mm of first direction D1.Cascade capacitor C1 is ultrathin
Cascade capacitor.The length of second direction D2 of ferritic 2 can also be with the third party of ferritic 2
Mutually equal to the length of D3.The length of the third direction D3 of ferritic 2 can also be than ferritic 2
The length of second direction D2 is big.
It is not necessarily referring to value on an equal basis consistent.Even if the elementary errors in scope set in advance or manufacture are by mistake
In the case of difference etc. is contained in value, value can also be set to mutually equal.Such as, comprise in multiple values
In the plurality of value mean value ± 5% in the range of in the case of, the plurality of value can also specify
For mutually equal.
A pair first sides 2c, 2d in the way of linking between a pair interarea 2a, 2b along first
Direction D1 extends.A pair first sides 2c, 2d also along third direction D3 (a pair interarea 2a,
The long side direction of 2b) extend.A pair second sides 2e, 2f are to link a pair interarea 2a, 2b
Between mode D1 in the first direction extend.A pair second sides 2e, 2f are the most in a second direction
D2 (short side direction of a pair interarea 2a, 2b) extends.
Ferritic 2 by the direction (first direction D1) relative at a pair interarea 2a, 2b is upper will
Multiple dielectric layer stackings and constitute.In ferritic 2, be laminated with the direction of multiple dielectric layer with
First direction D1 is consistent.Each dielectric layer is by such as comprising dielectric substance (BaTiO3System,
Ba (Ti, Zr) O3System, or (Ba, Ca) TiO3System etc. dielectric ceramics) ceramic green
The sintered body of sheet is constituted.In actual ferritic 2, the one chemical conversion of each dielectric layer can not recognize each
The degree on the border between dielectric layer.
As shown in Fig. 4～Fig. 6, cascade capacitor C1 possesses multiple first internal electrode 11 He
Multiple second internal electrodes 13.First and second internal electrode 11,13 is containing being typically used as stacking
The conductive material (such as, Ni or Cu etc.) of the internal electrode of type electrical equipment.First and
Two internal electrodes 11,13 as the electric conductivity lotion containing above-mentioned conductive material sintered body and
Constitute.
First internal electrode 11 and the second internal electrode 13 are configured on first direction D1 different
Position (layer).First internal electrode 11 and the second internal electrode 13 are with in the first direction dl
There is the relative mode in compartment of terrain be alternately arranged in ferritic 2.First internal electrode 11 and second
The polarity of internal electrode 13 is mutually different.
As shown in Figure 7 A, each first internal electrode 11 comprises main electrode portion 11a and connecting portion 11b.
Connecting portion 11b extends from one side (minor face of a side) of main electrode portion 11a, and in the first side
Expose on 2c.First internal electrode 11 exposes on the first side 2c, not a pair interarea 2a,
Expose on 2b, the first side 2d and a pair second sides 2e, 2f.Main electrode portion 11a and connection
Portion 11b forms.
Main electrode portion 11a presents second direction D2 and is long side direction and third direction D3 is short
The rectangle of edge direction.In the main electrode portion 11a of each first internal electrode 11, second direction D2
The length length than third direction D3 big.Connecting portion 11b is from first side of main electrode portion 11a
The end of 2c side, face extends to the first side 2c.The length of second direction D2 of connecting portion 11b
The length of second direction D2 than main electrode portion 11a is little.The third direction D3 of connecting portion 11b
Length mutually equal with the length of the third direction D3 of main electrode portion 11a.Connecting portion 11b is at dew
End for the first side 2c is connected with the first terminal electrode 5.The third party of connecting portion 11b
To the length of D3 can also length than the third direction D3 of main electrode portion 11a little.
As shown in Figure 7 B, each second internal electrode 13 comprises main electrode portion 13a and connecting portion 13b.
Main electrode portion 13a is in the first direction dl via a part (dielectric layer) and the master of ferritic 2
11a is relative in electrode portion.Connecting portion 13b prolongs from one side (minor face of a side) of main electrode portion 13a
Stretch, and expose on the first side 2d.Second internal electrode 13 exposes on the first side 2d,
And do not expose on a pair interarea 2a, 2b, the first side 2c and a pair second sides 2e, 2f.
Main electrode portion 13a and connecting portion 13b forms.
Main electrode portion 13a presents second direction D2 and is long side direction and third direction D3 is short
The rectangle of edge direction.In the main electrode portion 13a of each second internal electrode 13, second direction D2
The length length than third direction D3 big.Connecting portion 13b is from first side of main electrode portion 13a
The end of 2d side, face extends to the first side 2d.The length of second direction D2 of connecting portion 13b
The length of second direction D2 than main electrode portion 13a is little.The third direction D3 of connecting portion 13b
Length mutually equal with the length of the third direction D3 of main electrode portion 13a.Connecting portion 13b is at dew
End for the first side 2d is connected with the second terminal electrode 7.The third party of connecting portion 13b
To the length of D3 can also length than the third direction D3 of main electrode portion 13a little.
As shown in Fig. 4～Fig. 6, ferritic 2 has internal layer portion 3A and pair of outer layer portion 3B, 3C.
Multiple first internal electrodes 11 and multiple second internal electrode 13 are positioned at internal layer portion 3A.One is external
Layer portion 3B, 3C position in the way of clamping internal layer portion 3A in the first direction dl.In first
Portion's electrode 11 and the second internal electrode 13 are not positioned at pair of outer layer portion 3B, 3C.
The thickness T of the first direction D1 of outer layer portion 3B3BBy interarea 2a and nearest away from interarea 2a
Internal electrode (in present embodiment, the first internal electrode 11) first direction D1 on
Interval regulation.The thickness T of the first direction D1 of outer layer portion 3C3CBy interarea 2b with away from interarea
The first direction of internal electrode (in present embodiment, the second internal electrode 13) nearest for 2b
Interval regulation on D1.The thickness T of the first direction D1 of internal layer portion 3A3ABy away from interarea 2a
Nearest internal electrode and the interval on the first direction D1 of internal electrode nearest for interarea 2b
Regulation.The thickness T of internal layer portion 3A3A, the thickness T of outer layer portion 3B3BThickness with outer layer portion 3C
Degree T3CAggregate value be equivalent to the length of first direction D1 of ferritic 2.Each outer layer portion 3B,
The thickness T of 3C3B、T3CThickness T than internal layer portion 3A3ALittle.
D2 observes in a second direction, and the first terminal electrode 5 is positioned at the first side in ferritic 2
The end of 2c side.The first terminal electrode 5 has: is configured at electrode part 5a of interarea 2a, joins
It is placed in electrode part 5b of interarea 2b, electrode part 5c being configured at the first side 2c and configuration
Electrode part 5d in a pair second sides 2e, 2f.The first terminal electrode 5 is formed at five faces
On 2a, 2b, 2c, 2e, 2f.The most adjacent electrode part 5a, 5b, 5c, 5d exist each other
It is connected in the ridge line section of ferritic 2, thus is electrically connected to each other.
Electrode part 5a and electrode part 5c ridge line section between interarea 2a and the first side 2c
Upper connected.Electrode part 5a and electrode part 5d are at interarea 2a and each second side 2e, 2f
Between ridge line section on connected.Electrode part 5b and electrode part 5c are at interarea 2b and first
It is connected in ridge line section between the 2c of side.Electrode part 5b and electrode part 5d are at interarea 2b
And it is connected in the ridge line section between each second side 2e, 2f.Electrode part 5c and electrode part
It is connected in 5d ridge line section between the first side 2c and each second side 2e, 2f.
Electrode part 5c is all to cover the part being exposed to the first side 2c of each connecting portion 11b
Mode configure.Connecting portion 11b is directly connected to the first terminal electrode 5.Connecting portion 11b is even
Connect main electrode portion 11a and electrode part 5c.Each first internal electrode 11 and the first terminal electrode 5
Electrical connection.
D2 observes in a second direction, and the second terminal electrode 7 is positioned at the first side in ferritic 2
The end of 2d side.Second terminal electrode 7 has: be configured at interarea 2a electrode part 7a,
It is configured at electrode part 7b of interarea 2b, is configured at electrode part 7c of the first side 2d and joins
It is placed in electrode part 7d of a pair second sides 2e, 2f.Second terminal electrode 7 is formed at five
On face 2a, 2b, 2d, 2e, 2f.The most adjacent electrode part 7a, 7b, 7c, 7d are each other
The ridge line section of ferritic 2 is connected, thus is electrically connected to each other.
Electrode part 7a and electrode part 7c ridge line section between interarea 2a and the first side 2d
Upper connected.Electrode part 7a and electrode part 7d are at interarea 2a and each second side 2e, 2f
Between ridge line section on connected.Electrode part 7b and electrode part 7c are at interarea 2b and first
It is connected in ridge line section between the 2d of side.Electrode part 7b and electrode part 7d are at interarea 2b
And it is connected in the ridge line section between each second side 2e, 2f.Electrode part 7c and electrode part
It is connected in 7d ridge line section between the first side 2d and each second side 2e, 2f.
Electrode part 7c is all to cover the portion being exposed to the first side 2d of each connecting portion 13b
The mode divided configures.Connecting portion 13b and the second terminal electrode 7 are directly connected to.Connecting portion 13b
Main electrode portion 13a and electrode part 7c are connected.Each second internal electrode 13 and the second terminal
Electrode 7 electrically connects.
The first terminal electrode 5 and the second terminal electrode 7 separate in a second direction d 2.It is configured at
Electrode part 5a and electrode part 7a of interarea 2a are divided on interarea 2a in a second direction d 2
Open.It is configured at electrode part 5b of interarea 2b and electrode part 7b on interarea 2b second
On the D2 of direction separately.Electrode part 5d and electrode part 7d that are configured at the second side 2e exist
Separate in a second direction d 2 on second side 2e.It is configured at the electrode part of the second side 2f
5d and electrode part 7d are separated on the second side 2f in a second direction d 2.
Electrode part 5a, length L of second direction D2 of 5b51With electrode part 7a, 7b
Length L of second direction D271Mutually equal.Electrode part 5a, 5b and electrode part 7a, 7b
Second direction D2 on interval G1For length L51Hereinafter, and be length L71Below.This reality
Execute in mode, be spaced G1Than each length L51、L71Little.
First and second terminal electrode 5,7 is respectively provided with the first electrode layer 21, the second electrode lay
23 and the 3rd electrode layer 25.Electrode part 5a, 5b, 5c, 5d and electrode part 7a, 7b,
7c, 7d comprise the first electrode layer 21, the second electrode lay 23 and the 3rd electrode layer 25 respectively.The
Three electrode layers 25 constitute the outermost layer of first and second terminal electrode 5,7.
First electrode layer 21 is by giving electric conductivity lotion to the surface of ferritic 2 and being sintered
And formed.First electrode layer 21 is sintering conductor layer (sintered metal layer).In present embodiment,
First electrode layer 21 is the sintering conductor layer being made up of Cu.First electrode layer 21 can also be served as reasons
The sintering conductor layer that Ni is constituted.First electrode layer 21 is containing Cu or Ni.Electric conductivity lotion mixes
Close and have powder, glass ingredient, organic bond and the organic solvent being such as made up of Cu or Ni.
For the thickness of the first electrode layer 21, such as, it is 20 μm, minimum 5 μm to the maximum.
The second electrode lay 23 is formed on the first electrode layer 21 by plating.Present embodiment
In, the second electrode lay 23 is the plating Ni layer being formed on the first electrode layer 21 by plating Ni.
The second electrode lay 23 can also be plating Sn layer.The second electrode lay 23 is containing Ni or Sn.Second
The thickness of electrode layer 23 for example, 1～5 μm.
3rd electrode layer 25 is formed on the second electrode lay 23 by plating.Present embodiment
In, the 3rd electrode layer 25 is the plating Cu layer being formed on the second electrode lay 23 by plating Cu.
3rd electrode layer 25 can also be for plating Au layer.3rd electrode layer 25 is containing Cu or Au.3rd
The thickness of electrode layer 25 for example, 1～15 μm.
As can be seen from figures 8 and 9, it is also possible at the table of the 3rd electrode layer 25 as plating Cu layer
Multiple projection 25a is formed on face.In this case, each projection 25a is made up of Cu.Each projection
A diameter of 10～30 μm of 25a, the height of each projection 25a is 1～10 μm.
Then, with reference to Figure 10 and Figure 11, each electrode to first and second terminal electrode 5,7
Part 5a, the thickness of 5b, 5c, 7a, 7b, 7c illustrate.
As shown in Figure 10, about each electrode part 5a, the thickness of first electrode layer 21 of 5b,
The thickness observing middle body from first direction D1 is maximum, is positioned at interarea 2a, 2b and the first side
The thickness of the part of the ridge line section between the 2c of face is minimum.The first electrode about electrode part 5c
The thickness of layer 21, the thickness observing middle body from second direction D2 is maximum, be positioned at interarea 2a,
The thickness of the part of the ridge line section between 2b and the first side 2c is minimum.Electrode part 5a, 5b
And it is connected in the ridge line section that electrode part 5c is between interarea 2a, 2b and the first side 2c.
Therefore, the part being positioned at above-mentioned ridge line section in first electrode layer 21 of electrode part 5a, 5b
Thickness and electrode part 5c the first electrode layer 21 in the part being positioned at above-mentioned ridge line section
Thickness is mutually equal.
Each electrode part 5a, first electrode layer 21 of 5b have maximum gauge T5S1Thick with minimum
Degree T5Smin.First electrode layer 21 of electrode part 5c has maximum gauge T5S2And minimum thickness
T5Smin.The thickness T of the second electrode lay 235P1Throughout electrode part 5a, the overall phase of 5b, 5c
On an equal basis.The thickness T of the 3rd electrode layer 255P2Also throughout electrode part 5a, the entirety of 5b, 5c
Mutually equal.
Each electrode part 5a, 5b, 5c thickness by constitute correspondence electrode part 5a, 5b, 5c
The aggregate value of each thickness of the first electrode layer 21, the second electrode lay 23 and the 3rd electrode layer 25
Regulation.Therefore, observing from first direction D1, each electrode part 5a, 5b have at middle body
There is maximum gauge (T5S1+T5P1+T5P2).Each electrode part 5a, 5b are being positioned at interarea 2a, 2b
And in the part of the ridge line section that first between the 2c of side, there is minimum thickness (T5Smin+T5P1+T5P2)。
Observing from second direction D2, electrode part 5c has maximum gauge at middle body
(T5S2+T5P1+T5P2).Electrode part 5c is between interarea 2a, 2b and the first side 2c
Ridge line section part on there is minimum thickness (T5Smin+T5P1+T5P2)。
As shown in figure 11, about each electrode part 7a, the thickness of first electrode layer 21 of 7b,
The thickness observing middle body from first direction D1 is maximum, is positioned at interarea 2a, 2b and the first side
The thickness of the part of the ridge line section between the 2d of face is minimum.The first electrode about electrode part 7c
The thickness of layer 21, the thickness observing middle body from first direction D2 is maximum, be positioned at interarea 2a,
The thickness of the part of the ridge line section between 2b and the first side 2d is minimum.Electrode part 7a, 7b
And it is connected in the ridge line section that electrode part 7c is between interarea 2a, 2b and the first side 2d.
Therefore, the part being positioned at above-mentioned ridge line section in first electrode layer 21 of electrode part 7a, 7b
Thickness and electrode part 7c the first electrode layer 21 in the part being positioned at above-mentioned ridge line section
Thickness is mutually equal.
Each electrode part 7a, first electrode layer 21 of 7b have maximum gauge T7S1Thick with minimum
Degree T7Smin.First electrode layer 21 of electrode part 7c has maximum gauge T7S2And minimum thickness
T7Smin.The thickness T of the second electrode lay 237P1Throughout electrode part 7a, the overall phase of 7b, 7c
On an equal basis.The thickness T of the 3rd electrode layer 257P2Also throughout electrode part 7a, the entirety of 7b, 7c
Mutually equal.
Each electrode part 7a, 7b, 7c thickness by constitute correspondence electrode part 7a, 7b, 7c
The aggregate value of each thickness of the first electrode layer 21, the second electrode lay 23 and the 3rd electrode layer 25
Regulation.Therefore, observing from first direction D1, each electrode part 7a, 7b have at middle body
There is maximum gauge (T7S1+T7P1+T7P2).Each electrode part 7a, 7b are being positioned at interarea 2a, 2b
And in the part of the ridge line section that first between the 2d of side, there is minimum thickness
(T7Smin+T7P1+T7P2).Observing from second direction D2, electrode part 7c has at middle body
There is maximum gauge (T7S2+T7P1+T7P2).Electrode part 7c is being positioned at interarea 2a, 2b and first
There is in the part of the ridge line section between the 2d of side minimum thickness (T7Smin+T7P1+T7P2)。
Electrode part 5a, the maximum gauge T of the first electrode layer 21 of 5b5S1With minimum thickness T5Smin
Difference than the maximum gauge T of the first electrode layer 21 of electrode part 5c5S2With minimum thickness T5Smin
Difference little.Electrode part 5a, the maximum gauge (T of 5b5S1+T5P1+T5P2) and minimum thickness
(T5Smin+T5P1+T5P2) difference than the maximum gauge (T of electrode part 5c5S2+T5P1+T5P2)
With minimum thickness (T5Smin+T5P1+T5P2) difference little.
Electrode part 7a, the maximum gauge T of the first electrode layer 21 of 7b7S1With minimum thickness T7Smin
Difference than the maximum gauge T of the first electrode layer 21 of electrode part 7c7S2With minimum thickness T7Smin
Difference little.Electrode part 7a, the maximum gauge (T of 7b7S1+T7P1+T7P2) and minimum thickness
(T7Smin+T7P1+T7P2) difference than the maximum gauge (T of electrode part 7c7S2+T7P1+T7P2)
With minimum thickness (T7Smin+T7P1+T7P2) difference little.
In electrode part 5a, 5b, the maximum gauge T of the first electrode layer 215S1Ratio the second electrode
The thickness T of layer 235P1Greatly, and be the thickness T of the 3rd electrode layer 255P2Below.Electrode part
In 7a, 7b, the maximum gauge T of the first electrode layer 217S1Thickness T than the second electrode lay 237P1
Greatly, and be the thickness T of the 3rd electrode layer 257P2Below.
In present embodiment, maximum gauge T5S1With maximum gauge T7S1Mutually equal.Each maximum thick
Degree T5S1、T7S1For example, 8 μm.Maximum gauge T5S2With maximum gauge T7S2Mutually equal.?
Big thickness T5S2、T7S2For example, 12 μm.Minimum thickness T5SminWith minimum thickness T7SminIdentical
Deng.Each minimum thickness T5Smin、T7SminFor example, 1 μm.Thickness T5P1With thickness T7PlIdentical
Deng.Each thickness T5P1、T7P1For example, 3 μm.Thickness T5P2With thickness T7P2Mutually equal.Each thickness
Degree T5P2、T7P2For such as 10 μm.
Electrode part 5a, the maximum gauge (T of 5b5S1+T5P1+T5P2) and electrode part 7a, 7b
Maximum gauge (T7S1+T7P1+T7P2) than the thickness T of each outer layer portion 3B, 3C3B、T3CGreatly.
Each thickness T3B、T3CFor example, 15 μm.
As previously discussed, in present embodiment, the length of the first direction D1 of ferritic 2 compares ferritic
The length of second direction D2 of 2 is little, and the length than the third direction D3 of ferritic 2 is little.Cause
This, can realize the slimming of cascade capacitor C1, it is possible to realizes being suitable to be built in the layer of substrate
Stack capacitor.The first terminal electrode 5 has and is configured at electrode part 5a of interarea 2a, 2b, 5b,
Second terminal electrode 7 has and is configured at electrode part 7a of interarea 2a, 2b, 7b.Multilayer capacitor
Device C1 the interarea 2a side of ferritic 2, the interarea 2b side of ferritic 2 or ferritic 2 two interarea 2a,
2b side can be connected with the wired electric being formed at substrate.Therefore, cascade capacitor C1 can be easy
Be built in substrate.
After cascade capacitor C1 is built in substrate, substrate is formed and arrives first and second end
The via hole of sub-electrode 5,7 (electrode part 5a, 5b, 7a, 7b).Via hole passes through laser
It is processed to form.In this case, electrode part 5a, 5b, 7a, 7b are irradiated laser, electrode
Part 5a, 5b, 7a, 7b may sustain damage.
In present embodiment, electrode part 5a, the maximum gauge (T of 5b5S1+T5P1+T5P2) and
Electrode part 7a, the maximum gauge (T of 7b7S1+T7P1+T7P2) than each outer layer portion 3B, 3C
Thickness T3B、T3CGreatly.Therefore, in cascade capacitor C1, such as with electrode part 5a, 5b,
Maximum gauge (the T of 7a, 7b5S1+T5P1+T5P2、T7S1+T7P1+T7P2) it is thickness T3B、T3C
Following cascade capacitor is compared, and each electrode part 5a, 5b, 7a, 7b are thicker.Therefore, layer
In stack capacitor C1, even if to electrode part 5a, the situation of 5b, 7a, 7b irradiation laser
Under, it is also possible to suppress the impact of damage caused by the irradiation of laser lower.
Electrode part 5a, the maximum gauge (T of 5b5S1+T5P1+T5P2) and minimum thickness
(T5Smin+T5P1+T5P2) difference than the maximum gauge (T of electrode part 5c5S2+T5P1+T5P2)
With minimum thickness (T5Smin+T5P1+T5P2) difference little, therefore, electrode part 5a, 5b flat
Smooth degree is higher than the flatness of electrode part 5c.Therefore, distribution and the first terminal of substrate it are formed at
The connection reliability of electrode 5 improves.Electrode part 7a, the maximum gauge (T of 7b7S1+T7P1+T7P2)
With minimum thickness (T7Smin+T7P1+T7P2) difference than the maximum gauge of electrode part 7c
(T7S2+T7P1+T7P2) and minimum thickness (T7Smin+T7P1+T7P2) difference little, therefore, electrode
Part 7a, 7b flatness higher than the flatness of electrode part 7c.Therefore, it is formed at substrate
Distribution and the second terminal electrode 7 connection reliability improve.
The via hole formed by Laser Processing be formed as from the surface lateral of substrate first and second
The cone-shaped of terminal electrode 5,7 (electrode part 5a, 5b, 7a, 7b) side undergauge.Away from substrate
The distance on surface the most remote, the internal diameter of via hole is the least.That is, the distance on the surface away from substrate is more
Far, the area of the via conductor being configured in via hole is the least.Less at the area of via conductor
In the case of, the connection area of first and second terminal electrode 5,7 and via conductor is the least.
In the case of the flatness of electrode part 5a, 5b is higher than the flatness of electrode part 5c,
The most certain to the distance of electrode part 5a of the first terminal electrode 5,5b from the surface of substrate.
It is therefoie, for example, in the case of multiple via conductors are connected with the first terminal electrode 5, each logical
Road conductor is mutually equal with the connection area of the first terminal electrode 5.Electrode part 7a, 7b flat
In the case of smooth degree is higher than the flatness of electrode part 7c, from the surface of substrate to the second terminal electricity
Electrode part 7a of pole 7,7b distance the most certain.It is therefoie, for example, lead at multiple paths
In the case of body and the second terminal electrode 7 connect, each via conductor and the second terminal electrode 7
Connection area is mutually equal.These structures improve via conductor and first and second terminal electrode 5,7
Connection reliability.
Electrode part 5a, the maximum gauge T of the first electrode layer 21 of 5b5S1With minimum thickness T5Smin
Difference than the maximum gauge T of the first electrode layer 21 of electrode part 5c5S2With minimum thickness T5Smin
Difference little.Electrode part 7a, the maximum gauge T of the first electrode layer 21 of 7b7S1Thick with minimum
Degree T7SminDifference than the maximum gauge T of the first electrode layer 21 of electrode part 7c7S2Thick with minimum
Degree T7SminDifference little.These structures are easily achieved following structure: even if at first and second end
In the case of sub-electrode 5,7 has the first electrode layer 21 as sintering conductor layer, electrode portion
The flatness dividing 5a, 5b is also high than the flatness of electrode part 5c, and electrode part 7a, 7b
Flatness higher than the flatness of electrode part 7c.
The length of the first direction D1 of ferritic 2 is than length L51、L71Little.It is thereby achieved that
The more slimming of cascade capacitor C1.In cascade capacitor C1, such as with length L51、L71
The cascade capacitor that length than the first direction D1 of ferritic 2 is little is compared, electrode part 5a,
The area of 5b, 7a, 7b is relatively big, bigger with the electrode area that the distribution being formed at substrate is connected.
Therefore, it can easily carry out being formed at the distribution of substrate and first and second terminal electrode 5,7
Connection.
The length of the first direction D1 of ferritic 2 is than interval G1Little.This structure also can realize stacking
The more slimming of capacitor C1.
Interval G1For length L51、L71Hereinafter, therefore, in cascade capacitor C1, such as with
Interval G1Ratio length L51、L71Big cascade capacitor is compared, electrode part 5a, 5b, 7a,
The area of 7b is relatively big, bigger with the electrode area that the distribution being formed at substrate is connected.Therefore, may be used
Easily to carry out the connection of distribution and first and second terminal electrode 5,7 being formed at substrate.
First and second terminal electrode 5,7 is respectively provided with the first electrode layer 21, the second electrode lay
23 and the 3rd electrode layer 25.First and second internal electrode 11,13 and conduct sintering conductor layer
The first electrode layer 21 connect, therefore, first and second internal electrode the 11,13 and first electricity
Pole layer 21 reliably contacts.3rd electrode layer 25 contains Cu or Au, thereby it can be assured that
It is formed at the distribution of substrate and the connectivity of first and second terminal electrode 5,7.The second electrode lay
23, during forming the 3rd electrode layer 25, suppress the first electrode layer 21 to sustain damage.Cause
This, can deteriorate with the insulaion resistance of inhibition layer stack capacitor C1.
In electrode part 5a, 5b, 7a, 7b, the maximum gauge T of the first electrode layer 215S1、T7S1
Thickness T than the second electrode lay 235P1、T7P1Greatly, and be the thickness T of the 3rd electrode layer 255P2、
T7P2Below.Therefore, in cascade capacitor C1, such as with the thickness T of the second electrode lay 235P1、
T7P1It is the maximum gauge T of the first electrode layer 215S1、T7S1Above cascade capacitor is compared,
The second electrode lay 23 is relatively thin, can reduce formation the second electrode lay 23 on the first electrode layer 21
Time produce stress.In cascade capacitor C1, such as with the thickness T of the 3rd electrode layer 255P2、
T7P2Maximum gauge T than the first electrode layer 215S1、T7S1Little cascade capacitor is compared, the
Three electrode layers 25 are thicker, can suppress the impact of the damage caused by irradiation of laser lower.
As described below, after cascade capacitor C1 is configured at the incorporating section of substrate, fill to incorporating section
Resin, thus, is built in substrate.On the surface of the 3rd electrode layer 25 as plating Cu layer
In the case of forming projection 25a, due to projection 25a, shape on the surface of the 3rd electrode layer 25
Become concavo-convex.In the case of the 3rd electrode layer 25 is formed with projection 25a, and do not form projection 25a
Structure compare, the surface area of the 3rd electrode layer 25 is relatively big, and by above-mentioned concavo-convex 3rd electrode
The occlusion of layer 25 and resin is good.Therefore, when cascade capacitor C1 is built in substrate,
The 3rd electrode layer 25 and the close property of resin can be improved.
As shown in figure 12, cascade capacitor C1 imbeds and is installed on substrate 31.Cascade capacitor
C1 is built in substrate 31.Figure 12 is for the cascade capacitor involved by present embodiment is described
The figure of mounting structure.
Substrate 31 is by constituting the stacking of multiple insulating barrier 33.Insulating barrier 33 is by pottery or tree
The Ins. ulative material of fat etc. is constituted, the mutually integration by bonding grade.
Cascade capacitor C1 is configured at the incorporating section 31a formed on the substrate 31.Cascade capacitor
C1 utilizes the resin 34 filled to incorporating section 31a to be fixed on substrate 31.Cascade capacitor C1
In embedment substrate 31.Cascade capacitor C1 by be configured at the surface of substrate 31 electrode 35,
37 and via conductor 45,47 and electrically connect.The first terminal electrode 5 (electrode part 5a) passes through
Via conductor 45 and electrically connect with electrode 35.Second terminal electrode 7 (electrode part 7a) leads to
Cross via conductor 47 and electrically connect with electrode 37.
Via conductor 45,47 is by making conductive metal in the via hole being formed at substrate 31
(such as, Cu or Au etc.) grow up and are formed.The growth of conductive metal is by such as non-electrical
Solve plating and realize.Via hole to arrive the of cascade capacitor C1 from the face side of substrate 31
One and second electrode part 5a of terminal electrode 5,7, the mode of 7a formed.Via hole passes through
Such as laser machine and formed.
First and second terminal electrode 5,7 electrode part 5a, 7a smooth region in,
Guarantee and the join domain of via conductor 45,47.Therefore, it can reliably connect first and
Two-terminal electrode 5,7 (electrode part 5a, 7a) and via conductor 45,47.
In cascade capacitor C1, electrode part 5a, 7a have the 3rd electrode layer as coating
25.Therefore, it can reliably be formed in connection in the via conductor 45,47 of via hole and electrode portion
Divide 5a, 7a.In the case of forming via conductor 45,47 by plating, via conductor 45,
47 and electrode part 5a, 7a can the most reliably connect.
Then, with reference to Figure 13～Figure 16, the stacking involved by modified embodiment of the present embodiment is described
The structure of capacitor C2.Figure 13 is the stereogram of the cascade capacitor representing this variation.Figure
14～Figure 16 is the figure of the cross section structure of the cascade capacitor for this variation is described.
Cascade capacitor C2 possesses: ferritic 2, the first terminal electrode 5 and the second terminal electrode 7,
Multiple first internal electrodes 11, multiple second internal electrode 13.
In cascade capacitor C2, the length of the first direction D1 of the ferritic 2 i.e. height of ferritic 2
The length in direction is less than cascade capacitor C1.In this variation, the thickness of each outer layer portion 3B, 3C
Degree T3B、T3CThickness T than the 3rd electrode layer 255P2、T7P2Little.Thus, in this variation,
The more slimming of cascade capacitor C2 can be realized.
In cascade capacitor C2, also identical with cascade capacitor C1, each electrode part 5a, 5b,
7a, 7b are thicker.Therefore, even if to electrode part 5a, the feelings of 5b, 7a, 7b irradiation laser
Under condition, it is also possible to suppress the impact of damage caused by the irradiation of laser lower.Multilayer capacitor
In device C2, electrode part 5a, 5b flatness also high than the flatness of electrode part 5c, electricity
Pole part 7a, 7b flatness higher than the flatness of electrode part 7c.These structures improve shape
Become the distribution of substrate and the connection reliability of first and second terminal electrode 5,7.
Above, embodiments of the present invention are illustrated, but the present invention may not be defined in
The embodiment stated, can carry out various change in scope without departing from the spirit.
The first terminal electrode 5 need not have electrode part 5a and electrode part 5b.The first terminal
As long as the electrode part that electrode 5 has at least one party of electrode part 5a and electrode part 5b is made
For the electrode part being connected with the distribution being formed at substrate.Second terminal electrode 7 need not
There is electrode part 7a and electrode part 7b.As long as the second terminal electrode 7 has electrode part
The electrode part of at least one party of 7a and electrode part 7b is connected as with the distribution being formed at substrate
Electrode part.
The first terminal electrode 5 need not have electrode part 5d.The first terminal electrode 5 can also
It is formed at three faces 2a, 2b, 2c.Second terminal electrode 7 need not have electrode part 7d.
Second terminal electrode 7 can also be formed at three faces 2a, 2b, 2d.
In Figure 12, cascade capacitor C1 is imbedded and is installed on substrate 31 but it also may by layer
Stack capacitor C2 imbeds and is installed on substrate 31.
Claims (9)
1. a cascade capacitor, it is characterised in that
Possess:
Ferritic, it presents rectangular shape, and has: the most mutually relative to one
To interarea, in the second direction orthogonal with described first direction mutually relative to a pair first sides
Face, on the third direction orthogonal with first and second direction described mutually relative to a pair second
Side；
First and second internal electrodes multiple, its with the most mutually relative to side
Formula is the most alternately configured in described ferritic；
The first terminal electrode, it is configured at described ferritic, and with the plurality of first internal electrode
Connect；
Second terminal electrode, it is configured at described ferritic, and with the plurality of second internal electrode
Connect,
Described ferritic has the plurality of first internal electrode and the plurality of second internal electrode institute
The internal layer portion that is positioned at, positioned in the way of clamping described internal layer portion in said first direction
To outer layer portion,
Long than the described second direction of described ferritic of the length of the described first direction of described ferritic
The length of the described third direction of degree and described ferritic is little,
Described the first terminal electrode has the first electrode part being configured at described interarea and is configured at
Second electrode part of one described first side, described second electrode part and the plurality of the
One internal electrode connects,
Described second terminal electrode has the 3rd electrode part and the configuration being configured on described interarea
In the 4th electrode part of the first side another described, described 3rd electrode part is described master
Separate with described first electrode part in this second direction on face, described 4th electrode part
It is connected with the plurality of second internal electrode,
The maximum gauge of described first electrode part and the difference of minimum thickness are than described second electrode portion
The maximum gauge divided and the difference of minimum thickness are little,
The maximum gauge of described 3rd electrode part and the difference of minimum thickness are than described 4th electrode portion
The maximum gauge divided and the difference of minimum thickness are little,
The maximum gauge of described first electrode part and the maximum gauge ratio of described 3rd electrode part
The thickness in each described outer layer portion is big.
2. cascade capacitor as claimed in claim 1, it is characterised in that
Described the first terminal electrode and described second terminal electrode have the burning being formed at described ferritic
Knot conductor layer,
The maximum gauge of the described sintering conductor layer of described first electrode part and the difference of minimum thickness
The maximum gauge of described sintering conductor layer and the difference of minimum thickness than described second electrode part
It is little,
The maximum gauge of the described sintering conductor layer of described 3rd electrode part and the difference of minimum thickness
The maximum gauge of described sintering conductor layer and the difference of minimum thickness than described 4th electrode part
Little.
3. cascade capacitor as claimed in claim 1 or 2, it is characterised in that
The length of the described first direction of described ferritic is than described the second of described first electrode part
The length in direction is little, and less than the length of the described second direction of described 3rd electrode part.
4. the cascade capacitor as according to any one of claims 1 to 3, it is characterised in that
The length of the described first direction of described ferritic is than described first electricity in described second direction
The interval of pole part and described 3rd electrode part is little.
5. the cascade capacitor as according to any one of Claims 1 to 4, it is characterised in that
Described first electrode part in described second direction and the interval of described 3rd electrode part
Below length for the described second direction of described first electrode part, and it it is described 3rd electrode
Below the length of the described second direction of part.
6. cascade capacitor as claimed in claim 1, it is characterised in that
Described the first terminal electrode and described second terminal electrode are respectively provided with: be formed at described element
The sintering conductor layer of body, it is formed at the first coating of described sintering conductor layer, is formed at described the
Second coating of one coating,
Described sintering conductor layer contains Cu or Ni,
Described first coating contains Ni or Sn,
Described second coating contains Cu or Au.
7. cascade capacitor as claimed in claim 6, it is characterised in that
In described first electrode part and described 3rd electrode part, described sintering conductor layer is
The thickness of the first coating described in large thickness ratio is big, and is below the thickness of described second coating.
Cascade capacitor the most as claimed in claims 6 or 7, it is characterised in that
The thickness in each described outer layer portion is less than the thickness of described second coating.
9. the cascade capacitor as according to any one of claim 6～8, it is characterised in that
Described second coating is plating Cu layer,
The surface of described plating Cu layer is formed with the projection being made up of Cu.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895369A (en) * | 2015-02-13 | 2016-08-24 | Tdk株式会社 | Multilayer Capacitor |
| CN112863874A (en) * | 2016-09-23 | 2021-05-28 | Tdk株式会社 | Electronic component and electronic component device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040816A (en) * | 2014-08-13 | 2016-03-24 | 株式会社村田製作所 | Multilayer ceramic capacitor, multilayer ceramic capacitor couple including the same, and multilayer ceramic capacitor assembly |
| JP6978834B2 (en) | 2016-12-22 | 2021-12-08 | 太陽誘電株式会社 | Multilayer ceramic electronic components |
| JP7131897B2 (en) * | 2017-09-27 | 2022-09-06 | 太陽誘電株式会社 | Ceramic electronic component and manufacturing method thereof |
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Also Published As
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| CN105895372B (en) | 2019-03-29 |
| JP6867745B2 (en) | 2021-05-12 |
| US20160240316A1 (en) | 2016-08-18 |
| US9972437B2 (en) | 2018-05-15 |
| JP2016149487A (en) | 2016-08-18 |
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